这可能会有所帮助https://community.jaspersoft.com/wiki/how-merge-table-rows-repeated-values
在这个解决方案中，使用了 2 个数据集，第一个数据集对数据进行分组，而第二个数据集用于创建一个嵌入到带区中的表。
编辑：我采用了另一种方法来做到这一点。我用一张桌子来做整个事情。表格的第一列是药品，包含一个文本字段。表的第二列是时间。它是一个子报告，而子报告又包含另一个带有时间的表格。
我没有使用 SQL，而是在 java 中创建了手动数据。这是我的java代码。
import static com.vroozi.api.requests.util.JasperUtils.compileJrxmlToJasper;
import com.vroozi.api.requests.util.JasperUtils;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;
import org.springframework.stereotype.Service;
@Service
public class PDFServiceImpl {
public String generate() throws JRException {
final String format = DATE_TIME_FORMAT.format(new Date());
final String outputFileName = String.format("PO_%s_%s_PDF.pdf", "rajshree", format);
final String purchaseReportsPath = "/home/oem";
Map<String, Object> parameters = new HashMap<>();
Map<String, Object> cetamolMap = new HashMap<>();
cetamolMap.put("medicine", "Cetamol");
Map<String, Object> painKillerMap = new HashMap<>();
painKillerMap.put("medicine", "Pain killer");
List<Map<String, Object>> medicineMapList = Arrays.asList(cetamolMap, painKillerMap);
Map<String, Object> time1 = new HashMap<>();
time1.put("time", "11 a.m.");
Map<String, Object> time2 = new HashMap<>();
time2.put("time", "2 p.m.");
List<Map<String, Object>> timeMapList = Arrays.asList(time1, time2);
cetamolMap.put("timeList", new JRBeanCollectionDataSource(timeMapList));
painKillerMap.put("timeList", new JRBeanCollectionDataSource(new ArrayList<>()));
// Adding subreport for each medicine
cetamolMap.put("timeTableSubReport",
compileJrxmlToJasper("/subreport.jrxml"));
painKillerMap.put("timeTableSubReport",
compileJrxmlToJasper("/reports/subreport.jrxml"));
parameters.put("medicineMapList", new JRBeanCollectionDataSource(medicineMapList));
return JasperUtils.generatePdfReport("/reports/report.jrxml",
parameters, purchaseReportsPath, outputFileName);
}
}
这里是“report.jrxml”
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.6.0.final using JasperReports Library version 6.6.0 -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="catalogPOCR" pageWidth="559" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="559" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" whenResourceMissingType="Empty" uuid="42c67c01-6232-438f-8149-de04399dfcd2">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<property name="ireport.scriptlethandling" value="0"/>
<property name="ireport.encoding" value="UTF-8"/>
<import value="net.sf.jasperreports.engine.*"/>
<import value="org.apache.commons.collections.CollectionUtils"/>
<import value="java.util.*"/>
<import value="net.sf.jasperreports.engine.data.*"/>
<style name="table 1">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
</box>
</style>
<style name="table 1_TH" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
</style>
<style name="table 1_CH" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
</box>
</style>
<style name="table 1_TD" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
</box>
<conditionalStyle>
<conditionExpression><![CDATA[new Boolean($V{REPORT_COUNT}.intValue()%2==0)]]></conditionExpression>
<style backcolor="#FFFFFF"/>
</conditionalStyle>
</style>
<subDataset name="Table LineItems" uuid="183918c2-b66e-4347-ae7b-e891ab0a1d88">
<field name="medicine" class="java.lang.String"/>
<field name="timeTableSubReport" class="net.sf.jasperreports.engine.JasperReport"/>
<field name="timeList" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
</subDataset>
<subDataset name="Dataset1" uuid="183918c2-b66e-4347-ae7b-e891ab0a1d88">
<field name="order" class="java.lang.String"/>
</subDataset>
<parameter name="medicineMapList" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<parameter name="timeTableSubReport" class="net.sf.jasperreports.engine.JasperReport" isForPrompting="false"/>
<background>
<band splitType="Stretch"/>
</background>
<title>
<band splitType="Stretch"/>
</title>
<detail>
<band height="170">
<componentElement>
<reportElement key="table 1" style="table 1" positionType="Float" x="0" y="0" width="504" height="70" uuid="eb4057df-dd6a-40dd-870e-baac8c8afe17">
<property name="local_mesure_unitwidth" value="inch"/>
<property name="com.jaspersoft.studio.unit.width" value="inch"/>
<printWhenExpression><![CDATA[$V{REPORT_COUNT} == 1]]></printWhenExpression>
</reportElement>
<jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">
<datasetRun subDataset="Table LineItems" uuid="8a44aec8-cdd4-4be3-b47a-620e00bb910a">
<datasetParameter name="REPORT_DATA_SOURCE">
<datasetParameterExpression><![CDATA[$P{medicineMapList}]]></datasetParameterExpression>
</datasetParameter>
</datasetRun>
<jr:column width="70" uuid="baa7f786-d12a-4234-b9d7-faef6c9f25df">
<jr:detailCell style="table 1_TD" height="20" rowSpan="1">
<box>
<pen lineWidth="0.0"/>
<topPen lineWidth="0.0"/>
<leftPen lineWidth="0.0"/>
<bottomPen lineWidth="0.0"/>
<rightPen lineWidth="0.0"/>
</box>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement x="0" y="0" width="70" height="20" uuid="5f84b7ac-c2fe-4426-b91f-6714b470a2bc"/>
<box topPadding="5" leftPadding="2" bottomPadding="5" rightPadding="2">
<topPen lineWidth="0.5"/>
</box>
<textElement textAlignment="Right" verticalAlignment="Middle">
<font size="8" isBold="false"/>
<paragraph rightIndent="4"/>
</textElement>
<textFieldExpression><![CDATA[$F{medicine}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
<jr:column width="70" uuid="baa7f786-d12a-4234-b9d7-faef6c9f25df">
<jr:detailCell style="table 1_TD" height="20" rowSpan="1">
<box>
<pen lineWidth="0.0"/>
<topPen lineWidth="0.0"/>
<leftPen lineWidth="0.0"/>
<bottomPen lineWidth="0.0"/>
<rightPen lineWidth="0.0"/>
</box>
<frame>
<reportElement positionType="Float" isPrintRepeatedValues="false" x="0" y="0" width="50" height="20" isRemoveLineWhenBlank="true" isPrintInFirstWholeBand="true" uuid="62f0ab9e-28c4-4a58-935b-f98d26d600e3">
<property name="ShowOutOfBoundContent" value="false"/>
</reportElement>
<subreport>
<reportElement positionType="Float" x="0" y="0" width="50" height="20" uuid="48a7bbe4-b8ce-4a0d-a6e1-6ddd288e5602"/>
<parametersMapExpression><![CDATA[$P{REPORT_PARAMETERS_MAP}]]></parametersMapExpression>
<subreportParameter name="timeList">
<subreportParameterExpression><![CDATA[$F{timeList}]]></subreportParameterExpression>
</subreportParameter>
<dataSourceExpression><![CDATA[new net.sf.jasperreports.engine.JREmptyDataSource()]]></dataSourceExpression>
<subreportExpression><![CDATA[$F{timeTableSubReport}]]></subreportExpression>
</subreport>
</frame>
</jr:detailCell>
</jr:column>
</jr:table>
</componentElement>
</band>
</detail>
<columnFooter>
<band splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band splitType="Stretch"/>
</pageFooter>
<summary>
<band splitType="Stretch"/>
</summary>
</jasperReport>
这里是 subreport.jrxml
<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.6.0.final using JasperReports Library version 6.6.0 -->
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="timeTableSubReport" pageWidth="559" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="559" leftMargin="0" rightMargin="0" topMargin="0" bottomMargin="0" whenResourceMissingType="Empty" uuid="42c67c01-6232-438f-8149-de04399dfcd2">
<property name="ireport.zoom" value="1.0"/>
<property name="ireport.x" value="0"/>
<property name="ireport.y" value="0"/>
<property name="ireport.scriptlethandling" value="0"/>
<property name="ireport.encoding" value="UTF-8"/>
<import value="net.sf.jasperreports.engine.*"/>
<import value="org.apache.commons.collections.CollectionUtils"/>
<import value="java.util.*"/>
<import value="net.sf.jasperreports.engine.data.*"/>
<style name="table 1">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
</box>
</style>
<style name="table 1_TH" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
<topPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<leftPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<bottomPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
<rightPen lineWidth="0.0" lineStyle="Solid" lineColor="#000000"/>
</box>
</style>
<style name="table 1_CH" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
</box>
</style>
<style name="table 1_TD" mode="Opaque" backcolor="#FFFFFF">
<box>
<pen lineWidth="0.0" lineColor="#000000"/>
</box>
<conditionalStyle>
<conditionExpression><![CDATA[new Boolean($V{REPORT_COUNT}.intValue()%2==0)]]></conditionExpression>
<style backcolor="#FFFFFF"/>
</conditionalStyle>
</style>
<subDataset name="Table LineItems" uuid="183918c2-b66e-4347-ae7b-e891ab0a1d88">
<field name="time" class="java.lang.String"/>
</subDataset>
<parameter name="timeList" class="net.sf.jasperreports.engine.data.JRBeanCollectionDataSource"/>
<background>
<band splitType="Stretch"/>
</background>
<title>
<band splitType="Stretch"/>
</title>
<detail>
<band height="70">
<componentElement>
<reportElement key="table 1" style="table 1" positionType="Float" x="0" y="0" width="504" height="70" uuid="eb4057df-dd6a-40dd-870e-baac8c8afe17">
<property name="local_mesure_unitwidth" value="inch"/>
<property name="com.jaspersoft.studio.unit.width" value="inch"/>
<printWhenExpression><![CDATA[$V{REPORT_COUNT} == 1]]></printWhenExpression>
</reportElement>
<jr:table xmlns:jr="http://jasperreports.sourceforge.net/jasperreports/components" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports/components http://jasperreports.sourceforge.net/xsd/components.xsd">
<datasetRun subDataset="Table LineItems" uuid="8a44aec8-cdd4-4be3-b47a-620e00bb910a">
<datasetParameter name="REPORT_DATA_SOURCE">
<datasetParameterExpression><![CDATA[$P{timeList}]]></datasetParameterExpression>
</datasetParameter>
</datasetRun>
<jr:column width="70" uuid="baa7f786-d12a-4234-b9d7-faef6c9f25df">
<jr:detailCell style="table 1_TD" height="20" rowSpan="1">
<box>
<pen lineWidth="0.0"/>
<topPen lineWidth="0.0"/>
<leftPen lineWidth="0.0"/>
<bottomPen lineWidth="0.0"/>
<rightPen lineWidth="0.0"/>
</box>
<textField isStretchWithOverflow="true" isBlankWhenNull="true">
<reportElement x="0" y="0" width="70" height="20" uuid="5f84b7ac-c2fe-4426-b91f-6714b470a2bc"/>
<box topPadding="5" leftPadding="2" bottomPadding="5" rightPadding="2">
<topPen lineWidth="0.5"/>
</box>
<textElement textAlignment="Right" verticalAlignment="Middle">
<font size="8" isBold="false"/>
<paragraph rightIndent="4"/>
</textElement>
<textFieldExpression><![CDATA[$F{time}]]></textFieldExpression>
</textField>
</jr:detailCell>
</jr:column>
</jr:table>
</componentElement>
</band>
</detail>
<columnFooter>
<band splitType="Stretch"/>
</columnFooter>
<pageFooter>
<band splitType="Stretch"/>
</pageFooter>
<summary>
<band splitType="Stretch"/>
</summary>
</jasperReport>
输出看起来像这样
附：我并没有真正注意这里的造型。希望这对某人有所帮助，尽管我迟到了 7 年。